Note: People come a few minutes late at many venues so be ready to have a "pre-show" routine or audience warm-up before doing your second strongest routine.

I know a ventriloquist who essentially does:
1. Introduction of theme with main puppet
2. Magic trick: point a
3. Second puppet
4. Magic trick: point b
5. Third puppet
6. Magic trick: point c
7. Review with main puppet

This outline has worked for her for several shows and it is definitely easy to remember.

Mark Wade has an outline in his book. He suggests adding a novelty vent routine to each show.